package com.bls.blslib.view;

import android.content.Context;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.PopupWindow;

/**
 * 　　  () 　　　  ()
 * 　　  ( ) 　　　( )
 * 　　  ( ) 　　　( )
 * 　　┏┛┻━━━┛┻┓
 * 　　┃　　　━　　　┃
 * 　　┃　┳┛　┗┳　┃
 * 　　┃　　　┻　　　┃
 * 　　┗━┓　　　┏━┛
 * 　　　　┃　　　┃
 * 　　　　┃　　　┗━━━┓
 * 　　　　┃　　　　　　　┣┓
 * 　　　　┃　　　　　　　┏┛
 * 　　　　┗┓┓┏━┳┓┏┛
 * 　　　　　┃┫┫　┃┫┫
 * 　　　　　┗┻┛　┗┻┛
 * ——————————————————
 * Created by BinglingSu on 2018/5/2.
 */

public abstract class CommonPopupWindow {
    protected Context context;
    protected View contentView;
    protected PopupWindow mInstance;

    public CommonPopupWindow(Context c, int layoutRes, int w, int h) {
        context=c;
        contentView= LayoutInflater.from(c).inflate(layoutRes, null, false);

        initView();
        initEvent();

        mInstance=new PopupWindow(contentView, w, h, true);

        initWindow();
    }

    public View getContentView() { return contentView; }
    public PopupWindow getPopupWindow() { return mInstance; }

    protected abstract void initView();
    protected abstract void initEvent();
    protected void initWindow() {
        mInstance.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
        mInstance.setOutsideTouchable(true);
        mInstance.setTouchable(true);
    }

    public void showBashOfAnchor(View anchor, LayoutGravity layoutGravity, int xmerge, int ymerge) {
        int[] offset=layoutGravity.getOffset(anchor, mInstance);
        mInstance.showAsDropDown(anchor, offset[0]+xmerge, offset[1]+ymerge);
    }

    public void showAsDropDown(View anchor, int xoff, int yoff) {
        mInstance.showAsDropDown(anchor, xoff, yoff);
    }

    public void showAtLocation(View parent, int gravity, int x, int y) {
        mInstance.showAtLocation(parent, gravity, x, y);
    }

    public static class LayoutGravity {
        private int layoutGravity;
        // waring, don't change the order of these constants!
        public static final int ALIGN_LEFT=0x1;
        public static final int ALIGN_ABOVE=0x2;
        public static final int ALIGN_RIGHT=0x4;
        public static final int ALIGN_BOTTOM=0x8;
        public static final int TO_LEFT=0x10;
        public static final int TO_ABOVE=0x20;
        public static final int TO_RIGHT=0x40;
        public static final int TO_BOTTOM=0x80;
        public static final int CENTER_HORI=0x100;
        public static final int CENTER_VERT=0x200;

        public LayoutGravity(int gravity) {
            layoutGravity=gravity;
        }

        public int getLayoutGravity() { return layoutGravity; }
        public void setLayoutGravity(int gravity) { layoutGravity=gravity; }

        public void setHoriGravity(int gravity) {
            layoutGravity&=(0x2+0x8+0x20+0x80+0x200);
            layoutGravity|=gravity;
        }
        public void setVertGravity(int gravity) {
            layoutGravity&=(0x1+0x4+0x10+0x40+0x100);
            layoutGravity|=gravity;
        }

        public boolean isParamFit(int param) {
            return (layoutGravity & param) > 0;
        }

        public int getHoriParam() {
            for(int i=0x1; i<=0x100; i=i<<2)
                if(isParamFit(i))
                    return i;
            return ALIGN_LEFT;
        }

        public int getVertParam() {
            for(int i=0x2; i<=0x200; i=i<<2)
                if(isParamFit(i))
                    return i;
            return TO_BOTTOM;
        }

        public int[] getOffset(View anchor, PopupWindow window) {
            int anchWidth=anchor.getWidth();
            int anchHeight=anchor.getHeight();

            int winWidth=window.getWidth();
            int winHeight=window.getHeight();
            View view=window.getContentView();
            if(winWidth<=0)
                winWidth=view.getWidth();
            if(winHeight<=0)
                winHeight=view.getHeight();

            int xoff=0;
            int yoff=0;

            switch (getHoriParam()) {
                case ALIGN_LEFT:
                    xoff=0; break;
                case ALIGN_RIGHT:
                    xoff=anchWidth-winWidth; break;
                case TO_LEFT:
                    xoff=-winWidth; break;
                case TO_RIGHT:
                    xoff=anchWidth; break;
                case CENTER_HORI:
                    xoff=(anchWidth-winWidth)/2; break;
                default:break;
            }
            switch (getVertParam()) {
                case ALIGN_ABOVE:
                    yoff=-anchHeight; break;
                case ALIGN_BOTTOM:
                    yoff=-winHeight; break;
                case TO_ABOVE:
                    yoff=-anchHeight-winHeight; break;
                case TO_BOTTOM:
                    yoff=0; break;
                case CENTER_VERT:
                    yoff=(-winHeight-anchHeight)/2; break;
                default:break;
            }
            return new int[]{ xoff, yoff };
        }
    }
}
